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Lion Air crash: Flight recorders retrieved from sea

Indonesian investigators have found the flight data recorder from Lion Air Flight JT610, a discovery that should help explain why the new Boeing 737 crashed Monday, killing all 189 people on board.

CNN Indonesia showed images of divers bringing the device, commonly known as a "black box," on board one of the rescue ships in the sea close to Jakarta Thursday, four days after the Boeing 737 MAX 8 jet disappeared off radar during a routine short-haul flight.

The cockpit voice recorder (CVR), which records audio from the cockpit, is yet to be found, but is believed to be located on the seabed, some 35 meters (114 feet) deep.

National Transportation Safety Commission (KNKT) Deputy Director Haryo Satmiko told CNN that it will take two to three weeks to read the data from flight data recorder, and a further two to three months to analyze it.

Satmiko confirmed that in addition to the recorder "some parts" of the plane's fuselage had also been found.

Monday's ill-fated flight crashed 13 minutes after takeoff. It was supposed to be a one-hour flight to Pangkal Pinang on the island of Bangka.

Capt. Daniel Putut Kuncoro Adi, managing director of Lion Group, which owns Lion Air as well as other airlines, declined to offer any possible explanations to CNN for the crash.

"As a company we are waiting for the result from the National Transportation Safety Committee working with the black box" to determine what went wrong, Adi said Thursday.

Adi said that he knew the pilots on the flight and they "were very funny, very smart, very nice guys."

He said he believed the pilots did their job "professionally and they struggled to save the aircraft," and offered his condolences to the families of the victims.

Officials: Plane experienced flight issues the previous day

The jetliner had experienced technical issues the day before on another route, passengers aboard that flight revealed to CNN.

According to Gaharu, a management consultant and frequent flier, Sunday's Flight JT43 from Bali to Jakarta was around two hours late taking off from the Indonesian resort island.

When passengers eventually boarded, he said "things looked normal," but when the plane took off, "it felt as if it was struggling to ascend."

"I thought maybe it was caused by turbulence. After ten minutes in the air the plane dropped as if it was losing power. People panicked. It dropped about 400 feet," said Gaharu, adding that he had confirmed the height of the drop on a flight tracker website.

He said the drop felt like falling into "a really really deep hole."

Gaharu said that the seatbelt light remained on throughout the flight, and he saw the pilot and copilot outside the cockpit, "carrying what looked like a thick book."

Bamnang Warsuta, a consultant who said he was also on the flight, described his terror as the plane suddenly dropped.

"I screamed. Everybody screamed. And then (I) just prayed to god."

The president of Lion Air confirmed to CNN that the aircraft that crashed on Monday had been used to fly the JT43 Bali-Jakarta route the day before, and Indonesian authorities confirmed that the pilot on Sunday's flight reported a problem with one of the plane's instruments.

Lion Group's Daniel Putut said that all information had been handed over to Indonesia's National Transportation Safety Commission (KNKT) and he could not answer any questions about the fault due to a non-disclosure agreement signed to accommodate the investigation.

Expert: 'Something going on in that cockpit'

While no information has been released yet as to why the brand-new plane crashed into the sea 13 minutes after takeoff, FlightRadar24 has published data that shows the plane behaving erratically during takeoff.

When a plane would normally be ascending in the first few minutes of flight, the Lion Air jet experienced a 726-foot drop over 21 seconds.

Aviation expert David Soucie told CNN that the flight's last moments were "outside of the normal manual flight mode.

"There was something going on in that cockpit. Or something they were battling against in the autopilot."

Passengers' personal effects retrieved, ID'ed

On Wednesday, authorities started bringing relatives to the dockside to identify victims' personal belongings, which lay piled up next to cushions and other debris that appeared to be from the aircraft.

Items fished out of the sea showed wallets and other personal effects, including a child's Hello Kitty purse.

Epi Syamsul Qomar, whose 24-year-old son was on the flight, broke down into tears when he recognized his son's shoe.